Jurgen Stroop is an SS general, Warsaw executioner awaiting trial, Kazimierz Moczarski is a resistant unjustly condemned Polish, ironies or perversity of Soviet power, the two enemies of yesterday are locked in the same cell in 1949. Moczarski going during the nine months of this common internment listen patiently his cellmate unfold and tell his life. "Interview with the executioner" finally released in 1956 after the rehabilitation of the author is the result of this unique and frightening encounter, this book offers an original inquiry into the sources of evil and a fine psychological analysis of an ordinary German who became a zealous servant of the Nazi regime, or how fanaticism, ambition and following a flawless obedience, be a normal eventually became a remorseless executioner. In the line of the novel by Robert Merle "Death is my business", this excellent book is for all history buffs about the Second World War and especially on the Shoah, passionately informative.